clock_manager.c
1.49 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013-2017 Altera Corporation <www.altera.com>
*/
#include <common.h>
#include <wait_bit.h>
#include <asm/io.h>
#include <asm/arch/clock_manager.h>
DECLARE_GLOBAL_DATA_PTR;
void cm_wait_for_lock(u32 mask)
{
u32 inter_val;
u32 retry = 0;
do {
#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
inter_val = readl(socfpga_get_clkmgr_addr() +
CLKMGR_INTER) & mask;
#else
inter_val = readl(socfpga_get_clkmgr_addr() +
CLKMGR_STAT) & mask;
#endif
/* Wait for stable lock */
if (inter_val == mask)
retry++;
else
retry = 0;
if (retry >= 10)
break;
} while (1);
}
/* function to poll in the fsm busy bit */
int cm_wait_for_fsm(void)
{
return wait_for_bit_le32((const void *)(socfpga_get_clkmgr_addr() +
CLKMGR_STAT), CLKMGR_STAT_BUSY, false, 20000,
false);
}
int set_cpu_clk_info(void)
{
#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
/* Calculate the clock frequencies required for drivers */
cm_get_l4_sp_clk_hz();
cm_get_mmc_controller_clk_hz();
#endif
gd->bd->bi_arm_freq = cm_get_mpu_clk_hz() / 1000000;
gd->bd->bi_dsp_freq = 0;
#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
gd->bd->bi_ddr_freq = cm_get_sdram_clk_hz() / 1000000;
#else
gd->bd->bi_ddr_freq = 0;
#endif
return 0;
}
#ifndef CONFIG_SPL_BUILD
static int do_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
cm_print_clock_quick_summary();
return 0;
}
U_BOOT_CMD(
clocks, CONFIG_SYS_MAXARGS, 1, do_showclocks,
"display clocks",
""
);
#endif